LED Book-Light Suggestions? 53
Dormous asks: "My wife and I are both night owls and avid readers, and usually one of us goes to bed before the other, hence the need for a small portable light source. We recently had a booklight, and somehow, my wife managed to shatter the light bulb all over the bed. Therefore, I want to find a booklight that uses an LED as the Light Source. Anybody got any ideas where I can find such a thing. I've already tried ThinkGeek."
Mod parent back up! (Score:1)
Try setting your view to "oldest first", AC (Score:2)
It's not redundant, it's the first post.
ob. Simpsons Reference (Score:2, Informative)
Google? (Score:2)
A booklight using an LED [yahoo.com]! Who'd have thought it?
LED Booklight (Score:1)
Considering the recent breakage, something available now not in over two moths might be nice as well
Hmmmm (Score:2)
Nothing says 'Biatch I can't sleep so I'ma read me a book' like a Halogen Torchiere Floor Lamp with a 300 watt Halogen bulb.
Simple homebrew solution (Score:5, Interesting)
Another handy mod is to use a fairly bright red LED instead of white. This will make a light that's great for reading maps and star charts at night (for you navigators or astronomers) that won't mess with your dark adaption.
Re:Simple homebrew solution (Score:2, Insightful)
Re:Simple homebrew solution (Score:3, Informative)
Re:Simple homebrew solution (Score:3, Informative)
But I like your idea. That's the way to go!
Re:Simple homebrew solution (Score:1)
But anyway, you'll be intrested in this.
Take off that piece that says do not remove. It just pops off.
Remove the batteries, the "switch" will fall out.
Now, bend the + contact straight, and push it out the other side, or wiggle it off (you'll see what I'm talking about).
Ok, now that piece that said do not remove, is simply held in by 2 posts. Break one off.
Put the resistor in the post hole, coil one end around the bottom where the + contact used to be, solder/supe
Current control? (Score:1)
Does running 2.4 volts into an LED with a 2.9V forward drop put it into an operating range where current is in the desirable 20 mA range?
Thanks,
Fred
Re:Simple homebrew solution - Why bother? (Score:2, Informative)
This [dansdata.com] webside is crammed with all kinds of useful information regarding LEDs and LED torches. Check it out.
Re:Simple homebrew solution - Why bother? (Score:2)
Re:Simple homebrew solution (Score:1, Troll)
Thus blowing away most of the power into heat. A cute current mirror would be better.
Put data where your mouth is (Score:2)
While you're at it, tell me where to find a current mirror which is 100% efficient.
Re:Simple homebrew solution (Score:2)
Re:Simple homebrew solution (Score:2)
An added advantage of this conversion is that batteries last *MUCH* longer. Using the old incandescent bulb, my booklight went through a set of AA batteries a month. 2 years after switching to the LED, I haven't
Low tech solution. (Score:3, Insightful)
At first signs of sleep depravation go to bed.
Re:Low tech solution. (Score:3, Funny)
You'd think that anything that involved depravation [reference.com] might include his wife.
flylight (Score:3, Informative)
=
good early evening project, at the cost of about $20 (you can find flylights @ the apple store and compUSA), and cannibalizing the awnsering machine's wall wart.
Demotechs' Nightreader (Score:4, Informative)
Demotech [demotech.org] ("Design for self-reliance") is currently working on the Nightreader [demotech.org].
It's a small piece of reflecting foil, put together with two leds sticked in wood and a couple of batteries. The Nightreader is designed to be able to use two or three batteries of various sizes (whatever you have at hand) which have to little power to be used for something else.
A Headlamp might work (Score:2, Informative)
Re:A Headlamp might work (Score:1)
See also SuperBrightLeds [superbrightleds.com]
Astronomers nightlight (Score:3, Informative)
No luck at Think Geek? (Score:3, Informative)
Uh... ThinkGeek does have these (Score:4, Informative)
I have two of these, bought through ThinkGeek, and they're great. Both of mine are still on the first set of batteries.
LED replacement bulb (Score:4, Informative)
Black Diamond Ion Headlamp (Score:2, Informative)
A headlamp should be not too bright, and provide uniform lighting across the page. This eliminates single LED lights.
The Black Diamond Ion weighs less than 1 oz, and has an easily adjus
Sam's club (Score:2)
Headlamp (Score:1)
Highly recommended.
spreer
Sorry, I had to write this..... (Score:2)
Re:Sorry, I had to write this..... (Score:4, Funny)
Re:Sorry, I had to write this..... (Score:2, Informative)
Sam's Has Them (Score:2)
Lightwedge (Score:3, Informative)
It's a flat LED illuminated sheet you lay on the page you are reading so the light doesn't shine on your partner.
Re:Lightwedge (Score:3, Interesting)
I don't normally bitch about Ask Slashdot... but for crying out loud, either this guy didn't actually look at Think Geek, or he must have missed the "Gadgets" [thinkgeek.com] section, where the LightWedge is a "Geek Pick".
LED Flashlights (Score:1)
Not exactly what you asked for. (Score:1)
REI has a cool one Petzl Zipka LED Headlamp [rei.com] that isn't big and bulky. It also has a lens kit [rei.com] that would address some night vision issues (red filter, etc.)
I really like how small it is and I am tempted to get one myself to replace the ancient (circa 1990) clunker I have.
#1 result on Froogle (Score:2)
Once again [medicalmedia.com].
Spracht Wherever Lights (Score:2, Interesting)
http://www.spracht.com/wherever-gear/whereve r -ligh ts.htm
The Spracht light uses a flexible gooseneck led lamp like the unit described, but it terminates in a coaxial power connector. The connector connects to three adaptors:
-A USB adaptor for laptops
-A Cigarette Lighter adaptor for the car
-A 3 AA battery pack with belt clip (Handy for repair work)
If you need to run the unit with mains power it should be readily achived by rigging a gender bender
Take a hint? (Score:2)
It may just be me, but I would probably take that as a hint... Maybe spend less time reading and more time with her? Just a thought.
Lightwedge (Score:3, Interesting)
1. You need to keep the batteries fresh and the surface really clean, or you'll hurt your eyes trying to read with too little light.
2. It's inconvenient for books with a page surface larger than it or for books with extremely thin pages (I can't use it for my Bible because the very light pages stick to the wedge by static and end up creasing badly when I try to turn the page).
Princeton Tec - Aurora LED Headlamp (Score:1)
Re:Princeton Tec - Aurora LED Headlamp (Score:2, Interesting)
Look no more (Score:1)
http://www.lumatec.com/UltraLife.htm [lumatec.com]
What about paperbacks? (Score:1)
Many Out There (Score:1)
LumaTech [ccrane.com] makes a nice one. 100 hours on 4 AAA's...YMMV. $19.95 from here [windandweather.com].
LightWedge [wbthub.com] makes another, $34.95, available through Amazon. Customer reviews available. 100 hours/charge as well.
There are more....Google before posting...seriously. Do your own dirty work.
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For all you smart @$$es (Score:1)
To those that did have some insight, thank you.
Lighting LEDs from mains (Score:1)